mgrover

I am building my first full kit (only ARF's up till now) and I am curious how strong the wing structures need to be. I have been assembling the spars and ribs by tacking in place with thin CA and then hitting them with medium CA to really bond them. Do I need to do more than this to make these structures strong enough? Do I really need to be using epoxy to join these structures?

Thanks for any help,
Matt

LoboFlyer

That should be correct (tell me guys if I am wrong since my plane was built this way!). If you use epoxy, it will definately be very strong but you'll have a ton of extra weight.

Flyfalcons

Only epoxy needed in a wing is dihedral brace and the butt joint between the two halves. Use 30 min epoxy for that.

TerrellFlyer

you're doing it the right way,hi stress areas only need epoxy

MinnFlyer

My Feedback: (4)

Ditto

DIPSY

Hi
You have put in shear webs between the top and bottom spars haven't you ?
Dave

aldomontoya

White wood glue. strong, and soaks in, and is light weight. takes 24 hours to dry clear, but never failed me yet. CA is brittle.

Al

grippm

My Feedback: (2)

I've used a combination of CA and or carpenters glue. The CA works fine, and as noted placing your web spars correctly help. Epoxy on the wing halves only when joining. Remember, when you cover the wing ALOT of the strength will come from the covering job.